java 监控硬盘

import java.io.File;  
public class Test {  
 
    /** 
     * @param args 
     *  作者：avery_leo 
     *   监控硬盘使用情况 
     */ 
 
        public static void main(String[] args) {  
 
             File f = new File("D:/");  
             long freeSpace=f.getFreeSpace();  
             long totalSpace=f.getTotalSpace();  
             
             System.out.println("Free space = " + f.getFreeSpace());  
             System.out.println("Usable space = " + (totalSpace-freeSpace));  
             System.out.println("Total space = " + f.getTotalSpace());  
               
         }  
 
 
}